90 Minute Timer
A ninety-minute countdown ready to run, with a sound alert at zero. Matches one full sleep cycle and the length of a football match or a film.
What is a 90 Minute Timer?
A 90 minute timer counts down an hour and a half — 5,400 seconds — and rings an alarm at zero. This one is pre-set to ninety minutes and starts with one tap. Ninety minutes matches one full sleep cycle, the length of a football match, and a long deep-work session or a film. It runs with millisecond precision in your browser, continues in background tabs, and works with no signup.
What a 90 Minute Timer Is Good For
Sleep Cycles
One complete ~90-minute sleep cycle for smarter naps.
Match Length
Time a full 90-minute game or training session.
Focus & Films
A long, uninterrupted block for deep work or a movie.
90 Minute Timer FAQ
How long is a 90 minute timer?▾
5,400 seconds — one and a half hours. It is pre-set to ninety minutes and alarms at zero.
Why is 90 minutes linked to sleep?▾
A full sleep cycle lasts roughly 90 minutes. Timing sleep or a long nap in 90-minute multiples aims to have you wake at the end of a cycle, in lighter sleep, feeling less groggy.
Is a 90 minute focus session too long?▾
Some people work best in ~90-minute "ultradian" blocks followed by a proper break. If that feels long, try a 45-minute block or the 25-minute Pomodoro instead.